Boiler with vertical sections



(No Model.) 4 Sheets-Sheet 1.

- J. J HOGAN.

BOILER WITH VERTICAL SEGTIONS.

No. 425,941. Patented Apr. 15, 1890.

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(No Model.) 4 Sheets-Sheet 2. J. J. HOGAN. BOILER WITH VERTICAL SECTIONS.

Patented Apr.- 15, 1890.

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(No Model.)- 4 Sheets-Sheet 3.

- J. J. HOGAN.

BOILER WITH VERTICAL SECTIONS. .No. 425,941. Patented Apr. 15,1890.

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(No Model.) I

J. J. HOGAN. BOILER WITH VERTICAL SECTIONS. No. 425,941. Patented Apr. 15,1890. fly. 15.

UNITED STATES PATENT OFFICE.

JOHN J. HOGAN, OF BROOKLYN, NEWV YORK, ASSIGNOR'TO THE HOGAN ENGINEERING COMPANY, OF NElV YORK.

BOILER WITH VERTICAL SECTIONS.

. SPECIFICATION forming part of Letters Patent No. 425,941, dated April 15, 1890. Application filecLDecember 8. 1889. Serial No. 582,406. (No model.)

To all whom it may concern:

Be it known that 1, JOHN J. HOGAN, a citizen of the United States, residing at Brooklyn, Kings county, New York, have invented certain new and useful Improvements in Boilers with Vertical Sections, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention consists in an improved construction for a vertical boiler-section adapted for use singly or in series. The section is formed with a central vertical trunk for the ascent of the heated water and lateral vertical columns for the descent of the colder water, and sloping water-tubes extending between the central and the lateral passages.

The construction is especially adapted for heating water to supply a system of radiators, and the section is adapted for use singly by connecting the ascending and descending water-passages, respectively, with the supplypipes and the return-pipes of the radiators; or a series of the sections maybe connected'together and the radiators connected therewith in diiferent combinations. By my construction a large amount of heating-surface is exposed to the fire and to the heated gases, and a most efficient application of the fuel to heat the water is secured.

In the drawings, Figure 1 is a front elevatron of a water-section provided with a fire front and ash-box. Fig. 2 is a side elevation of four sections coupled together with a fire front and ash-box and a casing-plate at the rear end. Fig. 3 is a view through the center line of one of the sections on line w m in Fig. 2, excepting the connecting-header. Fig. 4 is a plan of one section; Fig. 5 an elevation of the same; and Fig. 6 is alongitudinal section on line y y in Fig. 1, excepting the header of the boiler shown in Figs. 1 and 2.

A is the central trunk; B, the lateral columns, and c, c, and c the sloping watertubes.

D is the ash-pit; E, the grate, and F the firebox, which is formed by the lower ends of the columns B and the first sloping tubes 0. In-

termediate to the tubes are smoke-spaces e, the top one being wholly covered by the tube 0 which extends across the entire width of the section, like the water-columns B. The tubes 0 and c are made narrower than the width of the section and disposed alternately at opposite edges of the section, as shown in Fig. 5, forming smoke-fines e, by which the heated gases may pass from the fire-box F upward alternately past the inner and outer edges of the water-tubes to reach the top smoke-space.

In practice the section or sections would be mounted between metallic plates to confine the smoke to the fire-box and to the smokespaces adjacent to the tubes, and the fire front G would be provided with a breeching or jacket I-I, having a nozzle H to conduct the smoke to the chimney.

The water-columns are provided at the bottom with inlets Z and at the top with inlets Z for the cold fluid returning from the radiators, and the trunkA is provided with an outlet on at the top to supply the heated fluid.

A very nearly vertical tube 0 connects the top tube 0 with the inner part of each watercolumn, and a partition n is extended downward within the column past the lower ends of all the water-tubes to prevent aconflict between the ascending and descending currents of water within the water-column. The partition n divides the lateral column E) into two vertical parts adjacent to the lower ends of the water-tubes, and provides a means or passage for an active circulation within the boiler when the external radiators'are cut off, while the water in the lateral column outside the partition remains quiescent, and thus serves" in some measure as awater-jacket to prevent radiation.

The opening 75 between the tube 0 and columns B, is exposed to the circulation of air, as indicated in Fig. 1, the tube 0 being made the full width of the section to prevent the heated gases from entering this space. The upper ends of the columns B are thus kept cool to promote downward circulation. A walled aperture forming an air-space 0 is also made through the lower part of the column adjacent to the vertical walls of the fire-box F, and operates to separate the colder fluid, which descends from the inlet-pipes 1, from the rising fluid, which is heated by the walls of the fire-box.

In the drawings, the water-tubes and the passages in the column adjacent to the firebox are provided with arrows 3, showing the ascent of the heated water, and the watercolumns are provided with arrows 0", showing the movement of the entering currents of the cold water. L

\Vhen the external system of radiators is not in use, the construction affords a great facility for internal circulation, and thus prevents the overheating of the metal, as the water elevated through the trunk A to the upper tubes 0 is provided with ample facilities for returning to the lower part of the boiler through the tubes 0 andcolumns B, as indicated by the arrows t.

In Figs. 2 and 5 four of the sections are connected together by thimbles "i screwed into thimble-holes in the adjacent faces of the water-columns B at their lower ends, and thimbles is inserted in a similar manner between the upper parts of the columns.

Iu'Fig. 2 a header J is shown connected with the outlets m of the four sections, and the pipes l (which are broken off in Fig. 2)

may be connected together to receive the re-' turn-fluid from the radiators, or each section of the boiler may be connected with separate radiators.

The provision of the inlets Z and Z at both the top and bottom of the boiler provides for the connection of numerous radiators, and avoids the choking of the passage by reducing all the return-pipes to discharge into a single inlet.

Figs. 2 and 5 show the mounting of a series of sections to constitute a single boiler, acasing-plate G being applied over the rear section of the boiler, and the fire front G and casing G being lined with bricks to prevent radiation.

. The fire front is provided with. door 13 for introducing fuel, and the ash-box D with the ordinary draft-door D.

By constructing each section with an odd number of primary water-tubes c, c, and 0 as shown in Figs. 3 and 5, and arranging the tubes alternately at opposite edges of the section a series of the sections may be connected together with opposite sides adjacent, and the smoke-passages e furnish tortuous channels extending upward from the fire-box to the upper smoke-space e, where the smoke is collected and delivered to the jacket H.

By making each section of a hollow casting the'construction requires the smallest possible outlay for patterns to produce a boiler of any capacity, as any number of sections may be connected together by the thimbles 2' to furnish a boiler of any required capacity.

The capacity of a boilermay also be increased at any time by removing either the fire front G or casing-plate G and coupling the desired number of sections to those previously in use, and increasing the area of the grate in the furnace, if desired. It will be understood that the lower part of each section constitutes a mere arch, formed by the lower ends of the columns B, and that the space within the arch, as well as the smoke-spaces e, extend through the whole depth of the section. A single section a may therefore be used as any eiiicient boiler by mounting it between a fire front and casing-plate, in the manner already described.

The column A is shown of less width than the columns B, and the inner ends of the water-tubes c c are extended only to the sides of the central column, thusforming, when the sections are clamped together, vertical grooves or smoke-spaces A', (see Figs. 4 and 6,) through which the smoke may pass directly upward from the fire-boxin contact with the column A. This column is thus exposed to a strong draft of the heated gases and to a higher temperature than any'other portion of the boiler, which greatly promotes the upward circulation of the fluid therein, as desired. The heated gases rising through the smoke-spaces A are checked by the top water-tubes c and are deflected to the breeching H, which may be applied to the fire front or to the rear section of the boiler, as may be desirable.

In Fig. 6 a space it appears between the edges of the topwater-tubes, which would be in practice caused by the irregularities of the castings; but the edges of the sections may be planed, if desired, to form a perfectly tight joint between the same, or a yielding and incombustible packing maybe inserted between the sections to form a joint, if preferable.

It will be apparent by inspection of Fig. 3 that there is a body of colder fluid in the column B which is almost wholly separated from the -fiuid within the water-space of the boiler by the air-space t, the partition n, and the transverse opening 0.

Having thus set forth my invention, what I claim herein, is

1. The construction for a boiler-section consisting in the central trunk A, the lateral columns B, and inclined water-tubes connected to the trunk and columns with intermediate smoke-spaces, each column being provided with a water-inlet and divided vertically by a partition adjacent to the mouths of the water-tubes, and the trunk being provided with water-outlet, as and for the purpose set forth.

2. The construction fora boiler-section consisting in the central trunk A, the lateral columns B, and inclined water-tubes connected to the trunk and columns with intermediate smoke-spaces, each column being provided with water-inlets at the topv and bottom and divided vertically by a partition adjacent to the mouths of the water-tubes, and the trunk being provided with water-outlet at the top, as and for the purpose set forth.

3. The construction foraboiler-scction consisting in the central trunk A, the vertical lateral columns B, the water-tubes c, connecting the bottom of the trunk with the columns, and the inclined water-tubes c and 0 connecting the column with the central trunk intermediate to its top and bottom, the watertubes being made narrower than the trunk and columns and arranged alternately at the opposite edges of the section, and each column being provided with a Water-inlet, and the section being provided with a water-outlet over the top of the trunk, as and for the purpose set forth.

a. The construction for a boiler-section consisting in the central trunk A, the lateral columns B, and inclined water-tubes connected to the trunk and columns with intermediate smoke-spaces, each lateral column being provided with a water-inlet at the top and divided vertically by a partition adjacent to the mouths of the water-tubes, and the trunk being provided with water-outlet, as and for the purpose set forth.

5. The construction for a boiler-section consisting in the central trunk A, the lateral columns B, and inclined water-tubes c, c, and 0 made narrower than the trunk and columns and arranged alternately at opposite edges of the section, each column being provided with the partition n, adjacent to the mouths of the water-tubes, and .with inlets at its upper and lower ends, and the section being provided with the water-outlet over the top of the trunk, as and for the purpose set forth.

6. The construction'for a boiler-section consisting in the central trunk A, the lateral columns B, and inclined water-tubes c, c, and 0 made narrower than the trunk and columns and arranged alternately at opposite edges of the section, the partition 02, adjacent to the months of the water-tubes, the watertubes 0 connecting the top water-tube with the water-column 13, within the partition, and

each column being provided with water-inlet at its upper and lower end, and the section being provided with the water-outlet m, as

umns and arranged alternately at opposite edges of the section, the partition n, adjacent to the mouths of the water-tubes, the outlet above the top of the trunk, and the lower end of each column being provided with the inlet Z and with the walled opening forming the airspace 0, adjacent to the sides of the fire-box, as and forthe purpose set forth.

8. The construction for a boiler-section consisting in the central trunk A, the lateral columns B, the inclined water-tubes c, c, and 0 arranged alternately at opposite edges of the section, the outlet m above the trunk A, the inlets Z Z at the top and bottom of each water-column, and the lateral thimble-holes for connecting the section with similar sections, substantially as herein set forth.

9. The combination, in a boiler, of a series of boiler-sections, consisting each in the central trunk A, having outlet on, the lateral columns B, having inlets Z and lateral thimbleholes at the top and bottom, the inclined water-tubes c, c, and 0 arranged alternately at opposite edges of the sections, thimbles 7c and 2', connecting the sections together, means, as the casing-plate G, for inclosing one end of the series, and the fire front G, having fuel- (loor p at the opposite end, the whole being provided with a suitable grate and ash-pit, substantially as herein set forth.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

JOHN J. HOGAN.

lVitnesses:

A. O. KITTREDGE, THos. S. CRANE. 

